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The Journal of The Korea Institute of Intelligent Transport Systems Vol.6 No.3 pp.95-100

70kV 임펄스용 접힌 TEM 혼 안테나에 관한 연구

이진성,변준호,안영준,이병제

Study on Folded TEM Horn Antennas for 70 kV Impulse

Jin-Seong Lee,Joon-Ho Byun,Young-Joon Ahn,Byungje Lee

Abstract

In this paper, a twice folded TEM horn antenna for 70 kV impulse high power system is proposed. The length reduction of 50 % is achieved by folding a conventional TEM horn antenna twice. The array elements are fed by the stripline power divider using the Chebyshev transformer. The power divider feeds four TEM horn antenna elements with an in-phased uniform power, and it covers a wide bandwidth (, VSWR<2.0). Considering the air breakdown at peak 70 kV impulse, the proposed antenna maintains the 25 mm gaps between conducting plates. The dimension of the twice folded horn antenna is (mm3), and the operating frequency is from 152 MHz to 750 MHz under 10 dB return loss. The peak gains are measured from 6.77 dBi to 10.70 dBi at .